Based on the information in this thread it looks like the approved version should be "Vigor2860_v3.8.2.2-03v_en.zip" with modem code 576d17_572801 & 574307_571801.

Some clarification from Draytek UK would be great.

Now running 3.8.2.2_VT2

Firmware showing as 05-07-04-03-00-07 (574307_A/B/C HW: A)

Draytek shows Vector 2 as recommended both on the .co.uk and also .com websites, although the release notes still show Vector 1 as recommended (they haven't been updated obviously).

If BT require SIN-498 wouldn't the recommendation change to the version containing this ?

Can anyone who is running Vector 3 version please post their firmware version ?

It's odd that nothing is mentioned in the release notes, particularly in view of the other publicity regarding compliance.

The only change I can see in the release notes is the removal of Support ZenMate VPN service between 3.8.2.1 and 3.8.2.2 otherwise identical new features & corrections , so this release possibly is not what we are waiting for ?

The SIN498 firmware will be specifically called SIN498 firmware; matching the modem code is not sufficient. It's not available yet, but should be soon. I understand they have to merge the approved code with current build and then run it through QC which couldn't be done until they got their certificate.

...but haven't they got that now, its all over their website?
http://www.draytek.co.uk/information/our-technology/bt-sin-498

Yes, they have the certificate so now they can go and built/test the firmware based on the latest build. The BT testing was done some time last year so it's a few releases behind.

Well - I've 'upgraded' my 2860ac to the 3.8.2.2 Vector 3 firmware, and although it has fixed many bugs, some of which I had already encountered, it has had a disastrous effect on synch speed. With 3.8.2 vector 2, I was getting between 4.9 and 5.6 Mb/s (yes, this is a VDSL2 line, just a long one). Now I am only getting about 3.6 Mb/s. Is this a bug, or was the previous modem code doing something naughty to achieve its speed? I'm strongly tempted to switch over to vector 2, since it seems to be still available.